CVE-2026-43373

net: ncsi: fix skb leak in error paths

HIGH
7.5
CVSS Score
Published: May 8, 2026 at 02:21 PM UTC
Updated: August 5, 2026 at 01:24 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%

Description

In the Linux kernel, the following vulnerability has been resolved: net: ncsi: fix skb leak in error paths Early return paths in NCSI RX and AEN handlers fail to release the received skb, resulting in a memory leak. Specifically, ncsi_aen_handler() returns on invalid AEN packets without consuming the skb. Similarly, ncsi_rcv_rsp() exits early when failing to resolve the NCSI device, response handler, or request, leaving the skb unfreed.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.8 ≤ v < 5.10.2534.8 ≤ v < 5.15.2034.8 ≤ v < 6.1.1674.8 ≤ v < 6.12.784.8 ≤ v < 6.18.194.8 ≤ v < 6.19.94.8 ≤ v < 6.6.1304.8 ≤ v < 7.05.11 ≤ v < 5.15.2035.16 ≤ v < 6.1.1676.13 ≤ v < 6.18.196.19 ≤ v < 6.19.96.2 ≤ v < 6.6.1306.7 ≤ v < 6.12.78138635cc27c9737f940c3aa80912ff7a61c825af4.87.0 rc17.0 rc27.0 rc3
Vendor states this is fixed in 553366c271479c0d571dd1bb5d1bcde4747fb82e (fixed)
Vendor states this is fixed in 59962588197863d0d746879f193905c0c6b3df49 (fixed)
Vendor states this is fixed in 5c3398a54266541610c8d0a7082e654e9ff3e259 (fixed)
Vendor states this is fixed in 81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a (fixed)
Vendor states this is fixed in 87138dde2d6937b12b967f28fe598a7d59000ae4 (fixed)
Vendor states this is fixed in 9891d7f4f1ede473c54b49776ae07755083eef06 (fixed)
Vendor states this is fixed in b70c4e5e711931cdd56e6e905737b72f1e649189 (fixed)
Vendor states this is fixed in fef5aa6e3bcf3c8053307642663a63b7362d7552 (fixed)
Vendor states this is fixed in 4.8 (unaffected)
Vendor states this is fixed in 5.10.253 (unaffected)
Vendor states this is fixed in 5.15.203 (unaffected)
Vendor states this is fixed in 6.1.167 (unaffected)
Vendor states this is fixed in 6.12.78 (unaffected)
Vendor states this is fixed in 6.18.19 (unaffected)
Vendor states this is fixed in 6.19.9 (unaffected)
Vendor states this is fixed in 6.6.130 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

CVSS

7.5HIGHLinux
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401

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